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# Autogenerated By   : src/main/python/generator/generator.py
# Autogenerated From : scripts/builtin/wer.dml

from typing import Dict, Iterable

from systemds.operator import OperationNode, Matrix, Frame, List, MultiReturn, Scalar
from systemds.utils.consts import VALID_INPUT_TYPES


def wer(R: Frame,
        H: Frame):
    """
     This built-in function computes the word error rate (WER)
     defined as wer = (numSubst + numDel + numIns) / length(r)
    
    
    
    :param R: Input frame of reference strings, shape: [N x 1]
    :param H: Input frame of hypothesis strings, shape: [N x 1]
    :return: Output matrix of word error rate per pair of strings,
        shape: [N x 1], where W[i,1] = wer(R[i,1], H[i,1])
    """

    params_dict = {'R': R, 'H': H}
    return Matrix(R.sds_context,
        'wer',
        named_input_nodes=params_dict)
